PentAcorn (ZX Spectrum). Game Desing: José Ignacio Rodríguez (Nightwolf). Graphics: Jarlaxe. Music and Audio: John McKlain. Implementation of Arkos Player: Syx. Betatesters: Metr, gg, 2015Retro - PentAcorn (ZX Spectrum). Game Desing: José Ignacio Rodríguez (Nightwolf). Graphics: Jarlaxe. Music and Audio: John McKlain. Implementation of Arkos Player: Syx. Betatesters: Metr, gg, 2015